Question 182141
Hannah has taken three exams and earned scores of 85,72, and 77 out of a possible 100 points. She needs an average of at least 80 to earn a B in the course. What range of scores on the fourth (and last) 100-point test will guarantee a B in the course?
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This is the inequality I set up for the problem: ((85+72+77+b)/4) >=80
80 <= (234+b)/4 
320 <= 234 + b 
86 <= b 
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Range: 86 <= b <= 100
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Cheers,
Stan H.